With a clear and stylish design, the 304 Silencer will make a lasting impression. The slightly longer body offers reduced noise output when compared to the R-304. Its perfectly constructed lightweight cylindrical canister, combined with the brushed aluminum body and stainless steel inlet tube and end cap, give you a silencer that looks as good as it performs and ensure that a truly unique riding experience is in store for you. The 304 silencer is recommended for most two-stroke applications.

Longer body design helps to reduce noise output.

6061-T6 brushed aluminum silencer body.

Stainless steel end-cap.

TIG and MIG welded for strength and durability.

Double-walled mounting bracket(s).

Allen head screws ensure easy repacking when needed for extended product life.

Made in the U.S.A.

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51 Reviews

4.8 out of 5 stars

5 Star434 Star103 Star02 Star01 Star0

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Smaller profile than stock. Maybe added some power but still working on finding the right jet combo for my riding style. Still fouling plugs like crazy. Actually had to go down in size on main and pilot jet and still have to go down. I ride mostly trails so its very low speed stuff maybe thats why. Sounds about the same but as the packing gets soaked in oil seems like its getting louder. Overall very happy. Has taken a beating getting dumped and has held up fine.

Exhaust sounds awesome on my kx500. Could also feel a little more power in the bottom end!

whitelineVerified Purchaser

1 year 3 months agoGeneva, Ohio

Ease of Installation 5/5
Performance 5/5
Power 5/5
Style 3/5

Exactly as I expected...

Form, fit and finish is of a quality that I'd expect. I can't say anything bad for the silencer. It did just as I wanted, I was running a shorty silencer, but with my SXS 300 kit it was a little to punchy for my tastes. The longer silencer moved the powerband higher into the RPM range and the hit was a tad softer. It works for me.

Was great paired with e Pro circuit spark arrest or, and was very good power booster, plus looks good on the bike, and seems to be okay durability, but not as good as FMF. By far one of the best power boosters in terms of 2 stroke pipes, I've ever used.

The 304 really lets all my horses out, top and bottom end show significant power increase. Had a spark arrest on before. Very snappy on the pipe, no back pressure lost. No change in spark plug wear. Hidden behind the number plate, very neat to the bike. SOUNDS SIKK!!!

i bought these to pair with a set of shearer inframe drag pipes they fit like a glove and took the banshees crackling sound away and gave her a extraordinary exhaust note in between a 4 stroke and a chainsaw sounds like an angels soung to my ears.

it is noticeably quieter , but dose not take away any preformane, all around good pipe

KawasakiKX85

Over 5 years agoShelby, NC

Pro circuit 304

This looks like its going to be a good silencer, it was a little hard to put on my 2007 kx 85 you have to force it some it was off a little bit. Havent got to ride it yet or start it up but im going to tommorw. But by hard to put on i mean you have to push real hard and it pushes the rubber muffler joint thing some and it goes back a little extra.

this silincer was a great buy, it quieted my bike down a bit and made it sound awesome, and i didnt even need to rejet my kx 80, there was a major power increase throught low to high rpm's the only problem was that the silincer didnt fit in the stock position and it wouldn't let me put my side pannel on right, and i had to modify the side pannel to get the new silincer to fit in but it looks alright, the silincer didn't look like it does in the picture but whatever, overall a great buy

Bought this with the Platinum Series Pipe for my 2000 YZ 250. It bolted right on, fit perfectly and performs great. I love the way this make s the bike sound! It is very easy to re-pack and the finish is durable. Big thumbs up!! See my review on the Platinum Series pipe for more...

A: Fitment between manufactures can not be guaranteed, however with that said you should not have an issue. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct silencer for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.

DT12

Q: 304 or R-304 shorty?

Over 6 months ago

I ride mostly in the desert with a 2015 KTM 300 EXC and would like to know which you recommend? I realise the R-304 will improve bottom end and the 304 top end, but will the R-304 take off a lot of the top end power? Really like the sound the R-304 makes. The pipe is the standard OEM one.
Thanks

A: Fitment can not be guaranteed with other manufactures although you should not have any issues. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct silencer for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.

A: Yes the Pro Circuit Factory 304 Silencer fits your 1995 Suzuki RM125. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct silencer for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.

A: If it is available through one of our suppliers, we would be happy to order it for you. Please contact one of our sales professionals to inquire about special orders and availability.Dirt Bike: 1-888-676-8853

Rider155

Q: Will this silencer give me more top end or bottom end power and is it worth buying?